XLR is a Y-Body.
V-platform is for the following:
Daewoo Prince
1991–1997: Daewoo Prince.
Holden Commodore
1978–1988: Holden Commodore, Holden Calais, Holden Royale (VB, VC, VH, VK, VL).
1988–1997: Holden Commodore, Holden Berlina, Holden Calais, Holden Royale (VN/VG, VP, VR, VS).
1997–2007: Holden Commodore, Holden Berlina, Holden Calais, Chevrolet Lumina, Chevrolet Omega (VT, VX, VY, VZ).
Holden Monaro
2001–2005: Holden Monaro, Pontiac GTO, Vauxhall Monaro, Chevrolet Lumina SS (V2, VZ).
Holden Statesman
1990–1999: Holden Statesman, Holden Caprice (VQ, VR, VS).
1999–2006: Holden Statesman, Holden Caprice, Buick Royaum, Chevrolet Caprice (WH, WK, WL).
Holden Ute
2000–2007: Holden Ute, Chevrolet Lumina Ute (VU, VY, VZ).
Opel Commodore
1967–1971: Opel Commodore A, Chevrolet Commodore.
1972–1977: Opel Commodore B, Opel Ranger, Chevrolet Commodore, Chevrolet Iran.
1977–1982: Opel Commodore C, Vauxhall Viceroy, Chevrolet Commodore, Daewoo Royale.
Opel Monza
1978–1986: Opel Monza A, Vauxhall Royale Coupe.
Opel Omega
1986–1994: Opel Omega A, Vauxhall Carlton Mark II, Chevrolet Omega A (1992–1999), Lotus Carlton, Lotus Omega.
1994–2003: Opel Omega B, Vauxhall Omega B, Cadillac Catera.
Opel Rekord
1967–1971: Opel Rekord C, Opel Ranger, Chevrolet Comodoro, Chevrolet Opala.
1972–1977: Opel Rekord D, Opel Ranger.
1977–1986: Opel Rekord E, Vauxhall Carlton Mark I.
Opel Senator
1978–1987: Opel Senator A, Chevrolet Senator, Vauxhall Royale.
1987–1994: Opel Senator B, Vauxhall Senator.
~Brian